uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/applications/window-managers/eww/default.nix

@@ -0,0 +1,45 @@
+{ lib
+, rustPlatform
+, fetchFromGitHub
+, pkg-config
+, gtk3
+, withWayland ? false
+, gtk-layer-shell
+, stdenv
+}:
+
+rustPlatform.buildRustPackage rec {
+  pname = "eww";
+  version = "0.2.0";
+
+  src = fetchFromGitHub {
+    owner = "elkowar";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "050zc3w1z9f2vg6sz86mdxf345gd3s3jf09gf4y8y1mqkzs86b8x";
+  };
+
+  cargoSha256 = "sha256-LejnTVv9rhL9CVW1fgj2gFv4amHQeziu5uaH2ae8AAw=";
+
+  nativeBuildInputs = [ pkg-config ];
+
+  buildInputs = [ gtk3 ] ++ lib.optional withWayland gtk-layer-shell;
+
+  buildNoDefaultFeatures = withWayland;
+  buildFeatures = lib.optional withWayland "wayland";
+
+  cargoBuildFlags = [ "--bin" "eww" ];
+
+  cargoTestFlags = cargoBuildFlags;
+
+  # requires unstable rust features
+  RUSTC_BOOTSTRAP = 1;
+
+  meta = with lib; {
+    description = "ElKowars wacky widgets";
+    homepage = "https://github.com/elkowar/eww";
+    license = licenses.mit;
+    maintainers = with maintainers; [ figsoda lom ];
+    broken = stdenv.isDarwin;
+  };
+}